In an investigation, discs of 2.5 cm diameter were cut from leaves. Fifty discs were p identical bags with different net sizes and buried in newly dug soil at a depth of 3 cm. At 60 day intervals the bags were dug up and the leaf discs measured to see how much o leaf area had disappeared. The table shows the percentage of leaf discs remaining in each bag. [Table showing percentage of leaf disks remaining over time for different net sizes] Which organisms are most important for breaking down the leaves?

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